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Finding the Fourth Proportional to 561,766,159.77, 775,238,575.92 and 310,888,806.90

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Solution

The fourth proportional to 561,766,159.77, 775,238,575.92 and 310,888,806.90 is: 429,027,259.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,766,159.77 : 775,238,575.92 = 310,888,806.90 : x
  2. Step 2: Convert to fraction form
    561,766,159.77/775,238,575.92 = 310,888,806.90/x
  3. Step 3: Cross multiply
    561,766,159.77x = 775,238,575.92 × 310,888,806.90
  4. Step 4: Simplify right side
    561,766,159.77x = 241,012,995,930,623,840
  5. Step 5: Solve for x
    x = 241,012,995,930,623,840/561,766,159.77
  6. Step 6: Final answer
    x = 429,027,259.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.